<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>
<script>
    var message = prompt('你爱我吗？')
    while (message !== '我爱你') {
        message = prompt('你爱我吗？')
    }
    alert('我也爱你啊！')
</script>

</html>